Convert a whole number between decimal, binary, octal and hexadecimal.
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255 (decimal) = 11111111 (binary) = 377 (octal) = FF (hexadecimal).
156 ÷ 2 = 78 remainder 0
78 ÷ 2 = 39 remainder 0
39 ÷ 2 = 19 remainder 1
19 ÷ 2 = 9 remainder 1
9 ÷ 2 = 4 remainder 1
4 ÷ 2 = 2 remainder 0
2 ÷ 2 = 1 remainder 0
1 ÷ 2 = 0 remainder 1
Reading upward: 156 = 10011100 in binary
Check by positional expansion: 128 + 0 + 0 + 16 + 8 + 4 + 0 + 0 = 156 ✓
Quoted from Number System Conversions — Binary, Decimal and Hexadecimal.
Split: 1001 | 1100
1001 = 8 + 0 + 0 + 1 = 9
1100 = 8 + 4 + 0 + 0 = 12 = C
So 10011100 = 9C in hexadecimal.
Check against decimal: (9 × 16) + 12 = 144 + 12 = 156 ✓ — the same number we started with in example 1.
Quoted from Number System Conversions — Binary, Decimal and Hexadecimal.
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